The documentation for WindowsAzure.Messaging.Managed states the purpose of the package as:
Use this with Windows Azure Service Bus and Notification Hubs client registration (for Windows Store and Windows Phone 8 apps). It adds Microsoft.WindowsAzure.Messaging.Managed.dll to your project.
Unfortunately, nowhere there is a clear description on how to access the Windows Azure ServiceBus Queues mechanism from a Windows Phone 8 app.
Is there any way, at all, to access ServiceBus Queues from a Windows Phone 8 app? And if there is, which package should allow that?